Broiler Strains Research Articles

Pengaturan Suhu Brooding pada Performa Ayam Broiler Pelanggan PT New Hope Indonesia

Genetic improvement through intensive selection in broilers for economically important traits such as body weight, growth rate, feed efficiency, and carcass quality plays a role in increasing the productivity and efficiency of the broiler industry. Good maintenance management is needed by paying attention to the quantity and quality of feed as well as comfortable and controlled environmental conditions. The environmental factor that is often the focus of attention is the temperature of milieu. During the brooding period aged 0‒21 days, the Day Old Chick cannot regulate its body temperature perfectly and still influenced by ambient temperature. Therefore, it is necessary to study the effect of brooding temperature on the performance of broiler at PT New Hope Indonesia's customers, to find the problems in regulating brooding temperatures along with solutions, evaluations, and improvement plans. Observations were made for 21 days in a semi-closed house with a population of 22,000 Cobb strain broiler. The research method used is data recording observation. The primary data were average brooding temperature for 21 days, depletion rate, feed consumption, body weight, feed conversion ratio (FCR), and production index. There was a deviation in body weight and FCR at the age of 11‒14 days due to the restriction of the heater until the age of 14 days and the wind speed at night which was more than 0.3 ms-1. With the corrective action of wind speed regulation, an effective temperature close to the thermoneutral zone and optimal production performance was obtained until the end of the brooding period.
 
 Keywords: body weight, broiler, brooding, feed conversion ratio, temperature

Effect of dietary supplementation of tannins, probiotics and antibiotic growth promoters on growth performance of broiler chicken

A total of 408, day-old Vencobb 400Y strain broiler chicks were locally procured, weighed individually and randomly divided into four treatment groups to study the effect of tannins, probiotics and antibiotics on feed intake, body weight, weekly body weight gain, feed conversion ratio, nutrient utilization, performance index and nutrient retention in broiler chickens during 35 days feeding trial. Growth performance of broilers in terms of feed intake, weekly body weight gain, feed conversion ratio and performance index was found significant and higher in T1 (Tannin group) and T3 (Probiotics group) in comparison to T2 (Antibiotics group) and control group. Supplementation of tannins and probiotics enhanced growth performance of broiler chicken compared to antibiotics and control group. There was no significant effect on dry matter, ether extract and phosphorus retention in broiler chickens fed tannin, probiotics and antibiotic except calcium. Thus, it may be concluded that supplementation of broiler diet with tannin, probiotics and antibiotics may prove a promising approach in enhancing the growth performance, body weight gain, feed conversion ratio and performance index.

Perinatal Thermal Conditioning of Three Broiler Strains in Southwestern Nigeria

Perinatal Thermal Conditioning of Three Broiler Strains in Southwestern Nigeria

CARCASS CHARACTERISTICS, ORGAN PROPORTION, HAEMATOLOGY, SERUM CHEMISTRY AND DIGESTIBILITY OF BROILER CHICKENS FED UMUCASS 36 CASSAVA ROOT MEAL

A week old 150 Arbor Acre strain of broilers fed UMUCASS 36 cassava root meal were used to evaluate the carcass characteristics, organ proportion, blood and serum chemistry and digestibility of the birds. The cassava was harvested, washed, peeled, chipped, oven dried and milled. The processed cassava root meal was used to formulate five diets, at 0, 25, 50, 75 and 100% levels designated D1, D2, D3, D4 and D5 respectively to replace maize. The birds were assigned in a Completely Randomized Design to five treatments with three replicates of ten birds per replicate. The carcass characteristics of broilers fed diet D2 was more superior and significantly (P>0.05) different from other broilers on the other diets. The superiority reflected in the bled weight, plucked weight, dressed weight and dressing percentage with the following values: 2136.67g, 2056.67g, 1723.33g and 77.71% respectively. The same trend was seen the values of the cut parts. Broilers on diet D5 had the highest percentage weight in heart (0.81%), liver (3.81%), gizzard (3.31%) and kidney (1.29%) while broilers on diet D2 had the least percentage of heart weight (0.38%), liver (1.33%), gizzard (1.11%) and kidney (0.57%). The experimental diets had no deleterious effects on the haematology and the blood serum of the broilers. Broilers placed on diet D2 had the best digestibility coefficients in all the digestibility parameters when compared with broiler chickens fed other diets. From the ongoing, it can be concluded that broilers on diet D2 performed best therefore, diet D2 is recommended.

Influence of weight at hatching on weekly weight of broiler chickens

Broiler production is concerned with raising birds that reach market weight within a short time interval, and efforts are geared at indices that can accurately predict the future growth performance of birds based on their initial measurements. This study investigated the relationship between initial weight taken at hatch and its influence on subsequent weights of birds. Newly hatched day-old chicks were obtained from a reputable hatchery in Ibadan, Oyo state. It comprised of chicks from four different commercial broiler strains (Arbor Acre, Cobb, Marshall and Ross). The chicks were tagged for proper identification and weighed and records of their weekly weights taken over ten (10) week period of the study. At the end of the study, a total of 216 broiler chicks comprising Arbor Acre (48), Cobb (52), Marshall (60) and Ross (56) were analysed. Weekly weight progressively increased with increasing age of the birds, while weight gain increased across the weeks, with a decline and a further rise in values reflecting the different stages of growth. The population was fairly homogenous at the early stages but was later moderately varied with increasing age of birds. There was a highly significant (P<0.001) positive correlation amongst all the weights studied but strongest values were recorded on measurements that are contiguously close. Despite the fact that regression of weekly weights was highly statistically significant on initial weight, it is noteworthy that initial weight as predictors of weekly weight had the best fit on the first weekly weight, but the influence of initial weight consistently decreased with increasing age of the broiler birds. This study revealed that initial weight of broiler birds at hatch is a good predictor of future weight of the birds and can be used to model the future growth performances of the birds.

Performance Broiler Strain Lohman and Strain Cibadak Raised In Postal with System Semi Clouse House

Performance Broiler Strain Lohman and Strain Cibadak Raised In Postal with System Semi Clouse House

Response of Two Strains of Commercial Broilers to Variation in Feeding Strategies: Re-test Feeding Practices of Broiler Farming

Response of Two Strains of Commercial Broilers to Variation in Feeding Strategies: Re-test Feeding Practices of Broiler Farming

Supplementation of Biopeptide from Chicken Feet to the Immune System and Growth of Broiler Chicken

The safety of poultry products, especially broiler chickens, can be stated to be relatively low. Antibiotic growth promoter (AGP) is used to improve chicken performance and maintain immunity. The ban on the use of AGP triggers the innovation of other materials to replace the function of AGP. Biopeptide is a solution that can be used. Biopeptides can be made from materials with a high protein content, for example, waste from chicken slaughterhouses. The waste that can be used is chicken feet, biopeptides produced from hydrolytic proteins have antioxidant and antimicrobial properties. These properties can improve the performance and immune system of broiler chickens. The aim of the study was to examine the supplementation of biopeptides from chicken feet on the immune system (total Escherichia coli and internal organ) and the growth of broiler chickens. The research material was 200 day old chickens of broiler strain cobb unsex, which were reared for 42 days of the rearing period. The treatment feeds were P0: basal feed, P1 basal feed + 2% biopeptide, P2: basal feed + 4% biopeptide, P3: basal feed + 6% biopeptide. The collected data were analyzed using analysis of variance with the Tukey test (BNJ). The results showed that biopeptide supplementation from chicken feet had a significant (P<0.05) effect on total Escherichia coli, spleen weight, bursa of Fabricius weight, body weight gain, and feed efficiency for broiler chickens. However, the results of the study had no significant effect (P>0.05) on liver weight and Avian Influenza antibody titers for broiler chickens. Biopeptide supplementation from chicken feet can reduce total Escherichia coli, and spleen weight, and increase the bursa of Fabricius weight, body weight gain, and feed efficiency for broiler chickens. Biopeptide supplementation from chicken feet of 6% gave the best results in body weight gain and feed efficiency.

The addition of guanidino acetic acid with different protein levels in feed on the growth performance and drumstick meat quality of broiler chicken

Guanidino acetic acid, or GAA, is the only direct precursor of creatinine and is involved in biological processes in the cellular energy of vertebrates. Creatine will be used in muscle and target cells to be phosphorylated into phosphocreatine utilizing creatine kinase, which functions to buffer ATP changes. GAA is involved in the biosynthesis of cellular energy for growth and muscle performance of broiler chickens, and it is also claimed to be capable of conserving arginine. This study employed a 2x3 factorial experimental design with two levels of protein (i.e., high and low) and three levels of GAA (i.e., 0 g/ton, 600 g/ton, and 1,200 g/ton) fed to 1,176 Indian River strain broiler chickens that were reared for 35 days. The R program was used to analyze the data, and if there was a significant difference, the Duncan multiple range test was performed. The results demonstrated that adding GAA on feed with different protein levels did not improve broiler performance. However, the addition of 1,200 g/ton GAA in low protein could reduce the cholesterol levels of broiler drumstick meat. Meanwhile, adding 600 g/ton GAA combined with the low protein treatment had the highest tenderness value. Therefore, to achieve the ideal proportion and enhance the performance and quality of broiler meat, GAA can continue to be added to broiler chicken feed.

Effect of Adding Palm Kernel Meal Extract to Rations Using Microparticle Protein Sources On Fatty Meat and Carcass Weight of Broiler Chicken

The purpose of the study was to examine the effect of the addition of palm kernel meal extract (PKME) to rations using microparticle protein sources on fatty meat and carcass weight of broiler chickens. The experimental chickens used were unsexed CP707 strain broilers aged 8 days as many as 200 birds with an average body weight of 153.98 ± 4.41 g. Palm kernel meal extract as treatment material. Ration composition includes ground corn, rice bran, microparticle soybean meal, microparticle fish meal, CaCO3, premix, lysine and methionine. The study was arranged using a completely randomized design with 5 treatments and 4 replicates, each experimental unit was filled with 10 animals. The treatments applied are: T0=rations using protein microparticles/RPM, T1=RPM+PKME 0,2%, T2=RK+PKME 0,4%, T3=PKME+EBS 0,6% dan T4=PKME+EBS 0,8%. Parameters measured included fat digestibility, relative weight of abdominal fat, meat fat mass and carcass weight. Data were analyzed for variance at the 5% significance level, if there was a significant effect, Duncan's test was conducted at the 5% significance level. The results showed that the addition of EBS to rations using microparticle protein sources had a significant effect (p<0.05) on fat digestibility, relative weight of abdominal fat, meat fat mass and carcass weight of broiler chickens. The conclusion is that the addition of 0.8% palm kernel meal extract to rations using microparticle protein sources can reduce fat digestibility, relative weight of abdominal fat, meat fat mass and carcass weight of broiler chickens.

Evaluation of Increasing Concentrations of Supplemental Choline Chloride on Modern Broiler Chicken Growth Performance and Carcass Characteristics.

Choline has been demonstrated to partially substitute methionine in broiler chicken diets due to their interconnected biosynthesis pathways. Yet, research on the impacts of dietary choline supplementation on modern strains of high-yielding broilers is limited. The objective was to evaluate the effect of increasing additions of choline chloride on the performance and carcass characteristics of broilers fed reduced methionine diets and reared under summer environmental conditions. Ross 708 x Yield Plus male broilers were reared for 41 days on used litter in floor pens (n = 2232; 31 birds per pen). Birds were fed one of six corn and soybean meal-based, reduced methionine diets containing 0, 400, 800, 1200, 1600, or 2000 mg of added choline chloride per kg of feed. Diets were provided in three phases. On day 43, 10 birds per pen were processed. Increasing dietary choline resulted in similar body weight gain, reduced feed intake, and improved feed efficiency. Choline chloride supplementation linearly increased both breast and carcass yields while concomitantly increasing the incidence and severity of wooden-breast-affected fillets. These results indicate that supplementing reduced-methionine broiler diets with choline chloride during high environmental temperatures may improve feed efficiency and increase carcass and breast yields but may also increase wooden breast.

Zootechnical Performance and Growth Curve Modelling of the Niamey Local Chickens in Niger

The Niamey region in Niger depends on imports to meet its chicken meat needs. Although consumers appreciate local poultry products, they cannot fulfill their needs. The reluctance of modern producers to use local chickens on their farms is linked to a lack of knowledge of the production characteristics of local strains, which have been little studied. Thus, this study aimed to determine the growth profile of traditional chickens from villages in the Niamey region (Niger). In doing so, 100 local chicks whose parents were collected in the surrounding villages of the Niamey region were followed from hatching until the age of 140 days. The chickens were raised in cages with 10 per compartment of 3 m length and 1.5 m width. Food consumption was recorded daily, and weights were measured weekly. The parameters of the growth curves were obtained using the Gompertz equation. Female and male chickens had a significant weight difference at the third week of age. The mean weight of chicks at hatching was 24.90 ± 0.36 g. At the end of the follow-up, males, with a mean weight of 1523.05 ± 26.22 g were significantly heavier than females (1052.73 ± 14.04 g). Over the entire period of the experiment, the average daily gain and consumption indices were 9.5 g/d and 5.12, respectively. Asymptotic weights were 2096.78 g and 1313.26 g for males and females, respectively. The maturation factor of the Gompertz equation was higher in females (0.0196 g/d) than in males (0.0181 g/d), and the inflection age averaged 75 days for both sexes. In conclusion, Niamey local chickens are slow growing and have a high feed conversion ratio compared to the modern broiler or layer strains.

Effect of photoperiod during incubation on embryonic temperature, hatch traits, and performance of 2 commercial broiler strains

Provision of light during incubation has shown the potential to enhance hatching traits and affect posthatch productivity, physiology, and behavior. In this study, 2 repeated trials were conducted to investigate the effect of photoperiod and strain on the embryo temperature, hatching traits and posthatch growth performance of 2 commercial strains of broilers (Ross 308 and Cobb 500). In each trial, hatching eggs were randomly distributed into 6 incubators with 3 photoperiod treatments: blue LED light for 12 h d-1 (12L:12D) or 18 h d-1 (18L:6D) during entire incubation were compared with no illumination condition (DARK). Data were analyzed as a 3×2 factorial arrangement with the trial as the blocking factor. Embryos incubated under 12L:12D and 18L:6D had lower air cell temperature (P < 0.05) than the DARK embryos from d 13 of incubation onward except on the day of candling. The response of air cell temperature to periodic illumination differed between 2 strains. Cobb embryos had lower air cell temperature in 12L:12D than those incubated with 18L:6D from d 16 of incubation onward, whereas lower air cell temperature was found in Ross embryos when illuminated with 18L:6D photoperiod compared to those under 12L:12D. The 12L:12D treatment was associated with improved (P < 0.05) navel closure condition of hatchlings. There were no differences in hatchability, embryo mortality, body weight, or length at hatch among photoperiod groups or its combination with strain. No differences in production parameters were found between DARK and illuminated groups. However, 12L:12D had heavier (P < 0.05) body weight on d 14 of age and higher (P < 0.05) body weight gain than 18L:6D from d 7 to 14 of age. The results of this study indicate that providing blue LED light up to 18 h d-1 has no detrimental effect on production of broilers, however, 12L:12D light regime improved chick quality at hatch compared to DARK and resulted in heavier birds by d 14 compared to 18L:6D.

Meta-analysis of the influence of the substitution of maize with cassava on performance indices of broiler chickens

Abstract There are growing numbers of publications on the effect of substitution of maize with cassava (Manihot esculenta Crantz) on growth indices of broiler chickens with variable results. The purpose of this meta-analysis was to explore the influence of substitution of maize with dietary cassava on growth traits (i.e., average daily feed intake [ADFI], body weight gain [BWG] and feed conversion efficiency [FCE]) of broilers. Search done in PubMed, Google scholar and Scopus databases yielded 303 studies of which 27 were suitable for the analysis. Heterogeneity was explored by subgroup and meta-regression analyses using the following moderator variables: publication year, study continent, processing methods, cassava form, substitution level, broiler strain, number of birds per groups and treatment durations. Results show that dietary cassava reduced ADFI (mean difference [MD] = −5.19 g/day; 95% confidence interval [CI]: −8.60, −1.79; I 2 = 99%) and BWG (MD = −8.49 g/day; 95% CI: −9.65, −7.33; I 2 = 98%) and increased FCE (MD = 0.29; 95% CI: 0.24, 0.35; I 2 = 99%) in broilers compared to controls. Publication year, broiler strain, treatment durations and substitution level) influenced the outcomes of the study and explained some of the sources of heterogeneity. In conclusion, our results suggested that dietary cassava inclusion at 5% (minimum) and 62% (maximum) reduced growth performance in broiler chickens. However, more effective methods for increasing the nutrient value of cassava roots for broiler chicken feeding as well as the cassava inclusion levels for optimal productivity are required.

Effect of Dietary Supplementation of Ginger and Black Pepper Powder on Haematological Parameters of Cobb-500 Broiler Chicken

An experiment was conducted to investigate the status of blood serum biochemical of broiler chickens in response to the diet supplemented with ginger and black pepper powder. Two hundred day-old Cobb 500 Strain broiler chickens were used for the experiment. The birds were randomly allotted into five treatments each replicated four times with 10 birds per replication. Grounded black pepper and ginger were added in the basal feed with different proportion, T1 (control); T2 (basal diet+0.02% ginger); T3 (basal diet+0.02% black pepper), T4 (basal diet+0.01% ginger+0.01% black pepper) and T5 (basal diet+0.02% ginger+0.02% black pepper. At 42days of rearing the effect of T5 treatment significantly resulted (p&lt;0.05) increased in total protein, albumin and hemoglobin concentration and decreased in triglyceride, cholesterol, very low-density lipoprotein, and calcium concentration. Administration of 0.02% ginger and 0.02% black pepper to broiler chickens improve blood profile, boosted their immunity as well as improved their health status. Therefore, the inclusion of 0.02% of black pepper and ginger could be beneficial to improve the performance of broiler.

Behavioural indicators of range use in four broiler strains

Free-range systems provide an outdoor range for broilers to give them the possibility to express a higher frequency and a wider range of behaviours, such as exploration, compared with those raised indoors. Greater variability in outdoor range use between individuals of the same flock is often reported. Individual variation in range use may result from differences in early-life behaviour or genetic background. Understanding how early-life behaviour influences range use may provide opportunities to enhance and predict range use. Previous studies have shown that range use could be influenced by the animal’s personality traits such as social motivation, boldness and foraging motivation. Therefore, this study investigated personality traits in several broiler strains, namely Hubbard JA757, Hubbard S757N, White Bresse and a dual-purpose strain; we examined the latter as it represents a potential solution to the ban of 1-day-old chick culling. The present study also investigated early-life behaviours, before range access, of range use to identify and assess the stability of these early-life indicators among the four broiler strains. For that purpose, we recorded the behaviour and range use of 100 male chickens per strain, both in the barn and during individual tests, before and after range access. We examined which behaviours were time consistent, whether early-life behaviours were influenced by genetic variation and whether early-life behavioural indicators predicted range use regardless of genetic variation. There was a significant (p < 0.001) difference between strains in several early-life behaviours, including the time spent resting or standing. Range use was time consistent regardless of the strain as our range use indicator followed a high-quality linear regression model (R² > 0.7) for 82–99% of the individuals depending on their strain. Besides, time consistency of social motivation and boldness seemed to depend on the strain. Even though foraging showed low (rho = 0.2–0.4) positive correlations with range use in three of the four studied strains, there were no significant and strong correlations in the four studied strains between early-life behavioural indicators and range use. In conclusion, our results show that the link between chick behaviour (before range access) and range use can be modulated by the bird’s strain. It is crucial to consider all these different factors to better understand how range use varies within and between flocks.

Assessment of meat quality attributes of four commercial broiler strains processed at various market weights

As the demand for poultry meat continues to rise, industry production is constantly challenged with obtaining consumer needs. Integrators have answered this increasing demand by improving the growth rate of broilers allowing for increased production efficiently. The resulting broiler produces higher yields and a larger quantity of fresh poultry to satisfy consumer needs. However, this increase in efficiency has cost integrators as new quality issues continue to manifest through global production. Therefore, the objective of the current experiment was to evaluate the effect of genetic strain (standard and high yielding) and target weight on meat quality attributes such as pH, water holding capacity (WHC), and tenderness, alongside meat quality defects such as breast and tender myopathies. In the current study, 1,800 broilers from 4 commercial strains (2 high breast yielding (HY) and 2 standard yielding (SY) were raised sex separate to evaluate meat quality trends over time at 6 previously defined market weights. Birds were processed at weights ranging from 2,043 to 4,313 g in 454 g increments. HY strains produced higher breast and tender yields than those of SY strains (P < 0.05). There was an increase in breast and tender yield as target weight increased (P < 0.05) for both HY and SY strains. Differences were observed between strains for all fillet dimensions (P < 0.05); however, these measurements increased as target weight increased as expected. Woody breast (WB) had a higher severity (P < 0.05) in HY strains over SY strains, for both males and females. Differences were observed in white striping (WS; P < 0.05) for females in both strains, but no differences were observed in males. A main effect of target was noticed for both WB and WS (P < 0.05), expressing increased severity as target weight increased. Shear values were influenced more by target weight (P < 0.05), but inconsistent differences were observed between HY and SY groups. Meullenet-Owens Razor Shear (MORS) energy values increased slightly as target weights increased (P < 0.05) from 2,951 to 4,313 g in both males and females, but differences were minor and inconsistent with the smaller carcass weights. The MORS peak counts generally increased as target weight increased for both sexes. While strain had minimal effects on meat quality attributes, processing weight had a greater influence on quality, specifically muscle myopathies, WHC, and shear properties.

RESPON AYAM PEDAGING YANG DIBERI GULA MERAH DENGAN LEVEL KUNYIT YANG BERBEDA DALAM AIR MINUM

This study aims to examine broiler chickens’ response to brown sugar with different levels of turmeric in drinking water. The study was conducted in the Department of Animal Husbandry housing unit, Faculty of Agriculture, Pattimura University, using 90 unsexed Cobb strain broiler chickens aged 1 day, randomized into three treatment groups following a completely randomized design with a 3 x 5 directional pattern. The treatment consisted of P0: feed + drinking water without brown sugar and turmeric, P1: feed + 2% brown sugar and turmeric 10 grams/1 liter of water; P2: feed + 2% brown sugar and turmeric 20 grams/1 liter of water. BRI commercial chicken feed is produced by PT. Japfa Comfeed Indonesia Tbk is used in this study. Feed intake, water intake, body weight gain, and feed conversion were measured variables. The data were analyzed using Anova and continued with the BNT test if there was a significant difference. The administration of brown sugar with different levels of turmeric in drinking water showed no significant difference (P&gt;0.05) for all the variables measured. However, the application giving is recommended 2% brown sugar and 20 grams of turmeric in drinking water.Key words: Feed intake, Body weight gain, Brown sugar, Curcumin, Broiler

Effects of broiler weight and strain on skin collagen characteristics and their applicability for co-extruded sausage casings

Effects of broiler weight and strain on skin collagen characteristics and their applicability for co-extruded sausage casings

The effect of isoamylase application in cassava root meal on broiler growth performance, feed retention time, and metabolite profile

The objectives of this study were to evaluate isoamylase application on the cassava root meal (CRM) and identify its effect on broiler growth performance, feed retention time, and metabolite profile. The experiment used 270 sexed broilers strain Lohman with an initial body weight of 45.88 ± 0.41 g were allotted into 3 treatments and 6 replications with 15 birds in each pen for 35 days. Dietary treatments were T0: Basal Ration + 0% CRM, T1: Basal Ration + 50% CRM, T2: Basal Ration + 50% CRM + 0.05% isoamylase. The results showed that the inclusion 50% of CRM both with and or without isoamylase was increased (P&lt;0.01) feed intake and feed conversion ratio (FCR) and gave the same effect (P&gt;0.05) on body weight, body weight gain, carcass weight, and carcass percentage during the overall period compared to fed T0. The treatment had no significant difference in coefisien total starch digestibility, metabolizable energy, and blood glucose levels. In conclusion, the inclusion of 50% cassava root meal with and or without isoamylase to subtitute corn in ration does not affect the broiler growth performance however FCR was higher than the control.